1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <fstream> 11 12 // template <class charT, class traits = char_traits<charT> > 13 // class basic_ofstream 14 15 // void open(const string& s, ios_base::openmode mode = ios_base::out); 16 17 #include <fstream> 18 #include <cassert> 19 #include "platform_support.h" 20 21 int main() 22 { 23 std::string temp = get_temp_file_name(); 24 { 25 std::ofstream fs; 26 assert(!fs.is_open()); 27 char c = 'a'; 28 fs << c; 29 assert(fs.fail()); 30 fs.open(temp); 31 assert(fs.is_open()); 32 fs << c; 33 } 34 { 35 std::ifstream fs(temp.c_str()); 36 char c = 0; 37 fs >> c; 38 assert(c == 'a'); 39 } 40 std::remove(temp.c_str()); 41 { 42 std::wofstream fs; 43 assert(!fs.is_open()); 44 wchar_t c = L'a'; 45 fs << c; 46 assert(fs.fail()); 47 fs.open(temp); 48 assert(fs.is_open()); 49 fs << c; 50 } 51 { 52 std::wifstream fs(temp.c_str()); 53 wchar_t c = 0; 54 fs >> c; 55 assert(c == L'a'); 56 } 57 std::remove(temp.c_str()); 58 } 59
